Double fertilization is important to the reproductive process of an angiosperm because it produces: -a reaction that keeps the plant from dying. -nutrition for the seed. -both the zygote and the endosperm. -a double portion of endosperm. -None of these choices are true.

Double fertilization is important to the reproductive process of an angiosperm because it produces: -a reaction that keeps the plant from dying. -nutrition for the seed. -both the zygote and the endosperm. -a double portion of endosperm. -None of these choices are true.

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter14: Plants And Fungi

Section: Chapter Questions

Problem 1SQ

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Embryology

Question

Double fertilization is important to the reproductive process of an angiosperm because it produces:

-a reaction that keeps the plant from dying.

-nutrition for the seed.

-both the zygote and the endosperm.

-a double portion of endosperm.

-None of these choices are true.

Definition Definition Flowering plants that produce fruit and seeds.

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In an angiosperm life cycle, sexual reproduction includes: meiosis within the male gametophyte to produce sperm. meiosis within the female gametophyte to produce eggs. meiosis within the ovary to produce megaspores. fertilization leading to development of microspores. fertilization leading to development of megaspores.
In flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microspores
The term angiosperm refers to -the presence of endosperm. -the enclosure of the seeds within a fruit. -the presence of pollen. -the narrow sperm of angiosperms. -the branching of vascular veins.
Which of the following events must occur before fertilization can happen? -Double meiosis -seed coat formation -endosperm formation -Pollination -fruit development
A fertilized egg becomes an ______ and the joining of polar nuclei and spem becomes the triploid(3n) endosperm. The ovule wall becomes the seed coat. A seed contains a sporophyte embryo, stored food, and a seed coat. In angiosperms, seeds are enclosed by ________.
Which option is TRUE regarding endosperm in monocots? Endosperm consists mainly of glucose and water. Endosperm matures into a fruit. Endosperm is consumed by the embryo as the seed develops. Endosperm is largely unused as the seed develops. Endosperm is transferred to the cotyledons.
Which of the following are found in gymnosperms, as well as in angiosperms? a. Fruits b. Seeds c. Cones d. Flowers
In angiosperms, after fertilization, the triploid cell gives rise to ____. a fertilized ovule a seed an embryo sporophyte endosperm a pollen grain
Angiosperms ( flower bearing ) plants developed after gymnosperms ( cone bearing ) plants during the Mesozoic era Which of the following is a benefit to plants developing the ability to have flowers over cones ? ANSWER CHOICES ARE IN THE PHOTO. thanks.
An angiosperm which is unable to form fruits would likely have which of the following defects? it would not be able to attract pollinators it would not be able to provide nutrients to the embryo • it would not be able to disperse seeds it would not be able to form seeds
Most of the approximately 900 species of gymnosperms are conebearing plants. On the surfaces of their cone scales are ovules, which later become seeds. These ovules are said to be naked because they are not completely enclosed by diploid tissue (as the ovules of angiosperms are). This characteristic gives the gymnosperms their name; gymnos is a Greek word meaning naked, and sperma means seed. Botanists now divide the gymnosperms into four groups: conifers, cycads, ginkgos, and gnetophytes.
In seed-bearing plants, the _______________ develops into the seed following fertilization The microsporangium. The sporophyte. The endosperm. The ovule. The pollen grain.